Counterbalancing sashes for stationary window casements



July 24, 1923.

G. W. LANCASTER COUNTERBALANCING SASHES FORYSTATIONARY WINDOW CASEMENTS Filed Jan. 5, 1921 Juve/144104 JNIIIII|| fnf! IIIIIIIIIIIIIIIIIIII Patented July 24, 19233.

entran rarasla/litt@ PATENT @FFHCCO GEORGE W. LANCASTER, OF RICHMOND, VIRGINIA, ASSIGNOR TO PERFECTE!) WN- DOW COMPANY, OF RICHMOND, VIRGINIA. A CORPORATION.

v COUNTERBALANCING SASHES FOR STATIONARY WINDOW CASEMENTS.

Application led January 5, 1921. Serial No. 435,233.

T0 all whom it may concern Be it known that GEORGE W. LANCASTER, a citizen of the -United States of America, residing at Richmond, county of Henrico, land State of Virginia, has invented new and useful Conterbalancing Sashes for Stationary Window Casements, of which the following is a specification.

It vis the purpose of the ,present invention to provide counterbalancing sashes for stationary window easements, wherein the construction and arrangement and particularly the operation of the several counterbalancing sashes are improvements over those existing in the patent issued to George W. Lancaster the seventh day of December 1920', Patent No. 1,361,163, and those embodied in the copending application of said George W.

Lancaster, filed February 20, 1920, Serial No. 360,151.

In the said copending application and the aforesaid patent the upper one of the aux'- iliary sashes is counterbalanced by another of said auxiliary sashes, by means of adetachable connection with the second auxiliary sash. lln other Words the connection is,`

independently of the other sashes, for ventilation.

Through extensive experience and a Wide.

application 'of this principle of adjustment of sashes, either for stationary window casements or for auxiliary sashes for swinging sashes, it has been found that the projections on one of the sashes, to which a detachable connection is made are not practical for the purpose. It has been found that they are in the way, very dangerous, particularly to the extent of snagging or cutting the hands of those who may operate the sashes, and furthermore impractical by reason of the detachable connections becoming accidentally disconnected, resulting in the upper outermost sash dropping substantially the height of the Window, which is very liable to cause the breaking of the p'ane of glass. Also it has been found that it is more or less expensive to construct the projections on the side rail of the sash.

It is the aim of the. present invention to overcome these disadvantages, and to provide connections between certain of the counterbalancing sashes,- whereby the balancing and the adjustment of the sashes are greatly facilitated.

Another purpose is to provide means opi A further purpose is the provision of a slide movably carrying a countcrbalancing sash, and to whichthe connections between upper outermost and lower innermost sashes are detachably connected, so that the uppermost sash may be lowered for ventilation, adjustably with relation to the inner lowermost counterbalancing sash, which may be closed, or partly opened.

A still further purpose accomplished by virtue of this construction, is that the inner lowerm'ost sash may be opened manually independently of the upper outermost sash temporarily, without in any way disturbing the upper sash. l

Additionally it is the aim to provide means for facilitating thefremoval of the several sashes, namely to provide guides, of sectional construction and involving 'arrangement, whereby4 the guides may be easily removed, to permit the sashes to be removed and replaced.

It is to be understood that the particulars herein given are Iin no way limitative and that While still keeping within the scope of the invention, any desired modifications of detail and desired proportions may be made through a conventional form of stationary window Casement, showing the application of the counterbalancing sashes.

Figure 2 is a sectional view on line 2--2 of Figure 1.

Figure 3 is an enlarged detail perspective view of a portion of the stationary window easement, showing sections ofthe guides, and also illustrating the detachable connections between the sash cords and the lower innermost sash.

Figure 4 is a detail pers ective view of the lower portion of several o the guides, showing the slide, which supports one of the sashes.

Figure 5 is a detail perspective view of the lower portion of several of the guides, also jshowing the lower part of one of the slides.

Figure 6 is a detail perspective view of one of the slides.

'Referring to the drawings, 1 designates the wall of the building and 2 an opening therein, and 3 denotes a window casement,

which, in the present instance is stationary, and is adapted to carry a plurality of counterbalancing sashes. The window easement 3 is provided witha plurality of vertical guides 4 on opposite vertical sides, which consists of a plurality of sheet metal channels arranged in parallelism.

In order to provide a lirm structure of channels, they are fastened together in any suitable manner, preferably by spot welding as indicated at 5. The channels or guides 4 of eachside of the window easement consist of upper and lower sections 6 and 7. The

' upper sections of channels are fixed stationary relatively to the window easement in any suitable manner preferably by spot welding 8, or by any other suitable means (not shown), whereby the upper section of channels may be removed, if it is so desired. The lower section of channels are preferably detachable relatively to the window easement, though it is obvious that they may be made stationary. In order to render the lower sections of channels removable, they are secured to the Casement by means of screws 9, which pass through certain of the channels orY guides, through the metal wall of the Casement, and into the upper and lower heavy bars 10. These bars 10 are fastened to the inner surface of the window easement preferably by spot welding, as indicated at 11, though other means may be employed. The reason for providing the heavy bars is that the Casement is constructed of relatively thin sheet metal, which would not hold the screws 9 with sulicient security to hold the channels or guides in place, hence the heavy bars 10, in order to provide suliicient backing to hold the screws. The purpose of constructing the channels or guides in sections, and rendering the upper sections of channels detachable or removable, is to permit the counterbalancing sashes to be eas- -of the adjacent channels or guides.

ily removed or replaced, or new ones inserted. Obviously by removing the screws 9 the lower sections of channels or guides may be removed readily, and then by i it is obvious that they may be applied to movable or swinging dominant window sashes.

Mounted in the channels or guides adj acent the interior of the room oradjacent the inner surface of the wall or window casement are vertically movable end members of a Slide 12 clearly shown in Figures 3 and 6. Only one end member is indicated, though it is obvious that two are employed in actual practice. The end member is constructed of sheet metal,.preferably steel and comprises inwardly and outwardly facing channels 13 and 14. The channel 14 of the end member straddles the adjacent flanges of two adjacent channels or guides of the easement, while the wall of the channel 13 fits intoTone he end member adjacent the channel 14 has an elongated flange 15, which rides or moves in the innermost channel or guide of the casement. The end member is capable of moving the full height of the window easement, for the purpose of adjusting the lower innermost sash. Though only one end member is illustrated, it is obvious that by means of a transverse bar or strip 16, the end member which is illustrated, is designed to be connected to an opposite end member (not shown). Both end members connected by the bar 16, as a whole, constitute a slide for actuating the lower innermost sash. By means of the bar or strip, which engages a groove 17 in the lower wall of the window Casement air is precluded from the interior of the room, when the lower innermost sash is closed. For instance the bar 16 engages the groove 17, so that when the lower innermost sash is closed, it contacts with the bar, obviously preventing the air or wind from entering.

The inner lowermost sash engages the bar 16 as long as it is resting upon the end or bottom walls of the slide, regardless of the position of the slide, namely, whether it is in a raised or lowered position. However when the slide is in a lowered position and the bar 16 engadged with the groove 17 the bar 16 is retaine tight against the lower rail of the inner lowermost sash. The inner lowermost sash may be raised relatively to the slide, and in'this case the lower rail of the inner lowermost sash will disengage Cil l aaeaeae Mounted in certain of the several chan nels or guides are upper outermost and two intermediate counterbalancing sashes 19 and 20-20, and mounted in the channels of the i end members 12, only one of which is shown is an inner lowermost sash 21, which as previously stated engages the outer face of the transverse bar 16, in order to preclude the air or wind. Mounted or supported in any suitable manner in the upper part of the easement, which may, if it is so desired, constitute the dominant sash movable in any suitable manner, are pulleys 22 and 23. Passing over the pulleys 22 is a cable, chain or sash cord or the like 24, which is connected to the upper outermost sash 19, and is in turn connected to a transverse bar or rod 31. v

Passing over the pulley 23, is a cable, sash cord or chain 25, whichy has its opposite ends connected in any suitable manner as at 27 to the upper .rails of the two intermediate or adjacent sashes as shown. By means of this cable, chain or sash cord 25, the two intermediate sashes are relatively counterbalanced. Obviously, the movement of one of the intermediate sashes causes movement ot the other and .vice versa. The sashes are capable of being disposed in different relative positions, for Ventilating purposes. The several counterbalancing sashes are connected by the interengaging flanges 28, which act to preclude the air or wind, dust and the like, when the counter balancing sashes are closed. Any other interlocking means may be employed for connecting the sashes.

@ne wall of the channel 14 of each end member 12 is provided with a `plurality of projecting ears or lugs 29, and any additional ear or lug 30. rl`he lug or ear 30 is disposed adjacent theA upper portion of the end member, and extends thefull length or full distance between the wall of the channel 14 and the innermost ange of the innermost channel or guide of the window easement. rlhe arms or lugs 29 extend from the same wall of the end member 12, but extend only half the distance between the wall of the channel 14 and the inner surface-ot' the innermost flange of the innermost channel or guide. lt is possible to move or adjust the bar 31 to engage any two opposite arms or lugs 29 and 30, and when the bar 31 is so adjusted the upper outermost sash may be Jlowered, without moving the slide. However should the bar 31 be moved from engagement with the lower arms or lugs 29 to engagement with the upper arms 29, the upper outermost sash is first lowered, alter which, by virtue of the bar 31l being moved with the end members l2 of the slide, the

latter will be moved, hence lowering the `upper outermost sash to any desired posii tion.

By engaging the bar 31 with the lugs orl arms 30, and then by moving the slide, the inner lowermost and outer uppermost sashes may be adjusted a maximum distance to insure a thorough ventilation.

lVhen the bar 31 is disengaged from certain of the arms, it is possible to pass the bar between the arms and the flange of the innermost channel, in order to permit the bar to be moved or adjusted vertically.

By means of the lower end of the channel 13 of the end member being closed, the lower innermost sash 21 is supported, so that when the slide as a whole is moved vertically in its guides or channels, the lower innermost sash is likewise moved.

It pressure is applied to the upper edge of the upper intermediate sash, the upper outermost sash is lowered, and the other intermediate and lower innermost sashes are raised, owing to the interlocking flanges of the sashes.i llt is possible to raise the lower innermost sash independent of the slide, that is temporarily, but when the slide as a whole is moved, the lower innermost sash simultaneously moves. lt is obvious that the lower innermost sash may be raised to a position above said slide, after which the sash may be disposed in an angular position, so that one edge of thelower innermost sash may rest upon the upper end of the slide, thereby supporting the lower innermost sash in a raised position independently of the slide.

llt is obvious that by removing the screws 9, the lower sections of channels or guide-i may be easily detached, allowing removal or replacement of the several auxiliary sashes. The adjoining ends of the upper and lower sections are shown, as indicated at 32. The bar 31-may be constructed of any suitable material, preferably steel or other suitable metal, and may be supplied with extra weight, so as to counterbalance with the upper outermost sash. ln other words the bar 31 may be thick enough, either at its ends or throughout its length, so as to counterbalance with the upper outermost sash. For instance by tilting the bar 31, so as to disengage the ends from the projections 29 or 30, the bar 31 may be moved, and raised to aV position above the slide, then the outer uppermost sash may be lowered the full distance of the window easement independent of the lower sash.

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ln constructing the various joints, namely the channels of the upper, lower and intermediate sashes, putty or some similar material may be used to preclude the weather, and to act as an agent to prevent metal binding, particularly where the metal contacts with fragile material such as glass. In the overlapping joints 28, aswell as where the side walls of the stationary windowcasement engage in the wall of the structure, any suitable material, preferably asbestosy in any form, either in a moist pliable state, or in a dry more or less fibrous condition may be used. It has been found that asbestos in any form or condition constitutes a better agent' for precluding the weather. The sash cords or cables may be constructed of any suitable material, either rope or in the form of chains, or in the form of metallic cables, such as copper, in a more or less pliable condition, so as to easily pass over the pulleys, thereby p-reventing a binding and permitting the sashes to move freely.

The stationary easement may be constructed of any suitable sheet metal, preferably rolled sheet steel, rolled in any angular form, and furthermore in constructing the Casement, or the channel sashes for the glasses, it is desirable to afford any form of refinement, or trimming, such as rolled or j beaded edges or the like, in order to present a neat appearance.

Also in fitting the glasses in the channels of the sashes-putty or some similar material has been used up to the present time, and it has been found that in using this form of material, that the glasses are not held firm and secure, particularly when the putty or similar material dries out; furthermore in using putty or similar material it is very difficult' to obtain a very close or tight joint between the parts, particularly where the glasses engage the channels of the sashes. Therefore in the present invention it is desirable to use asbestos in any form or lcondition, to insu@ better and tighter joints between all parts, whetherthey be fixed or separable joints. lt has. been found that asbestos in a moist pliable condition is more preferable in the present case.

While the channel guides for the sashes are described and shown as being constructed from channel strips fastened together, most preferably used in hand made structures of this character, it is particularly desirable to roll these parts from single pieces of sheet metal, in order to provide refinements for the structure, as well as otherwise reducing the cost of manufacture, which in turn will lower the selling price.

The invention having been set forth, what is claimed is:

l. In a wlndow construction, a frame having opposed vertical guides, counterbalancideama the slide, whereby the latter sash and the slide may be moved simultaneously, the construction and arrangement of the connection being such that it is adjustable relatively to the slide, whereby said latter sash may be adjusted relatively to the slide witholu moving the sash which is mounted in the s 1 e.

3. In a window construction, a frame having opposed guides, a slide mounted in certain of the opposite guides, opposed sashes, one mounted in the guides, the other sash removably mounted in the slide, said slide having projections, sash cords connected to the sash in the guides of the frame and having means to selectively engage with certain of said projections, whereby the slide carried sash may be adjusted independently of the slide, or the slide and its sash may be adjusted to counterbalance with the sash which is mounted in guides of the frame.

4. In a window construction, a frame having opposed guides, a slide mounted in certain of the opposite guides, opposed sashes, one mounted in the guides, the other sash removably disposed in the slide, said slide having projections, sash cords connected to the sash in the guides of the frame and having means to selectively engage with said projections, whereby the slide carried sash may be adjusted independently of the slide, or the slide and its sash may be adjusted to counterbalance with the sash which is mounted in the guides of the frame, and means carried by the slide to cause the sash which is disposed therein to move with the slide.

5. In a window construction, a frame..

having opposite guides, a slide having guides and engaging certain of the opposite guides of the frame, a lowermost sash movable in the guides of said slide, the lower ends of the guides of the slide having means to support said lowermost sash to move with the slide, an uppermost sash, sash cords connected to the last named sash, and means for vdetachably and adjustably connecting the sash cords to the slide, whereby adjustment of the sash cords will adjust the uppermost sash independently of and relatively to the slide.

i end members 12, only one ot' which is shown is an inner lowermost sash 21, which as previously stated engages the outer face ot the transverse bar 16, in order to preclude the air or wind. Mounted or supported in any suitable manner in the upper part of the easement, which may, if it is so desired, constitute the dominant sash movable in any suitable manner, are pulleys 22 and 23.

Passingbver the pulle sf22 is a cable, chain or sash cord or the like 24, which is connected to the upper outermost sash 19, and is in turn connected to a transverse bar or rod 31.

Passing over' the pulley 23, is a cable, sash cord or chain 25, whichl has its opposite ends connected in any suitable manner as at 27 to the upper vrails of the two intermediate or adjacent sashes as shown. By means of this cable, chain or sash cord 25, the two intermediate sashes are relatively counterbalanced. 0bviously, the movement of one of the intermediate sashes causes movement of the other and vice versa. The sashes are capable of being disposed in ditferent relative positions, for Ventilating purposes. The several counterbalancing sashes are connected by the interengaging flanges 28, which act to preclude the air or wind, dust and the like, when the counterbalancing sashes are closed. Any other interlocking means may be employed for connecting the sashes.

@ne wall of the channel 14 of each end member- 12 is provided with a plurality ot projecting ears or lugs 29, and an additional ear or lug 30.- 'lhe lug or ear 30 is disposed adjacent the upper portion of the end member, and extends theffull length or full distance between the wall of the channel 14k and the innermost ange of the innermost channel or guide of the window easement. rlhe arms or lugs 29 extend from the same wall of the end member 12, but extend only half the distance between the wall of the channel 14 and the inner surfaceof the innermost flange of the innermost channel or guide. lt is possible to move or adjust the bar 31 to engage any two opposite arms or lugs 29 and 30, and when the bar 31 is so adjusted the upper outermost sash may be lowered, without moving the slide. However should the bar 31 be moved from engagement with the lower arms or lugs 29 to engagement with the upper arms 29, the upper outermost sash is first lowered, after which, by virtue of the bar 31 being moved with the end members 12 of the slide, the

latter will be moved, hence lowering the upper outermost sash to any desired position.

By engaging the bar 31 with the lugs or arms 30, and then by moving the slide, the inner lowermost and outer uppermost sashes may be adjusted a maximum distance to insure a thorough ventilation. lVhen the bar 31 is disengaged from certain of the arms, it is possible to pass the bar between the arms and the flange of the innermost channel, in order to permit the bar to be moved or adjusted vertically.

By means of the lower end of the channel 13 of the end member being closed, the lower innermost sash 21 is supported, so that when the slide as a whole is moved vertically in its guides or channels, the lower innermost sash is likewise moved.

lf pressure is applied to the upper edge of the upper intermediate sash, the upper outermost sash is lowered, and the other in- SUB termediate and lower innermost sashes are raised, owing to the interlocking flanges of the sashes. lt is possible to raise the lower innermost sash independent of the slide, that is temporarily, but when the slide asa whole is moved, the lower innermost sash simultaneously moves. lt is obvious that the lower innermost sash may be raised to a position above said slide, after which the sash may be disposed in an angular position, so that one edge of thelower innermost sash may rest upon the upper end of the slide, thereby supporting the lower innermost sash in a raised position independently of the slide.

lt is obvious that by removing the screws 9, the lower sections of channels or guide-i may be easily detached, allowing removal or replacement ot the several auxiliary sashes. rlihe adjoining ends of the upper and lower sections are shown, as indicated at 32. The bar 31 may be constructed of any suitable material, preferably steel or other suitable metal, and may be supplied with extra weight, so as to counterbalance with the upper outermost sash. ln other words the bar 31 may be thick enough, either at its ends or throughout its length, so as to eounterbalance with the upper outermost sash. For instance by tilting the bar 31, so as to disengage the ends from the projections 29 or 30, the bar 31 may be moved, and raised to a` position above the slide, then the outer uppermost sash may be lowered the full distance of the window easement independent of the lower sash.

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In constructing the various joints, namely the channels of the upper, lower and intermediate sashes, putty or some similar material may be used to preclude the weather, and to act as an agent to prevent metal binding, particularly Where the metal contacts with fragile material such as glass. In the overlapping joints 28, aswell as where the side walls of the stationary Window easement engage in the wall of the structure, any suitable material, preferably asbestos in any form, either in a moist pliable state, or in a dry more or less fibrous condition may be used. It has been found that asbestos in any form or condition constitutes a better agent for precluding the Weather. The sash cords or cables may be constructed of any suitable material, either rope or in the form of chains, or in the form of metallic cables, such as copper, in a more or less pliable condition, so` as to easily pass over the pulleys, thereby preventing a binding and permitting the sashes to move freely.

The stationary easement may be constructed of any suitable sheet metal, preferably rolled sheet steel, rolled in any angular form, and furthermore in constructing the easement, or the channel sashes for the glasses, it is desirable to afford any form of refinement, or trimming, such as rolled or beaded edges or the like, in order to present a neat appearance.

Also in fitting the glasses in the channels of the sashes-putty or some similar material has been used up to the present time, and it has been found thatin using this form of material, that the glasses are not held firm and secure, particularly when the putty or similar material dries out; furthermore in using putty or similar material it is very difficult to obtain a very close or tight joint betweenthe parts, particularly where the glasses engage the channels of the sashes. Therefore in the present invention it is desirable to use asbestos in any form or condition, to insu@ better and tighter joints between all parts, whether they be fixed or separable joints. lt has been found that asbestos ina moist pliable condition is more preferable in the present case.

While the channel guides for the sashes are described and shown as being constructed from channel strips fastened together, most preferably used in hand made structures of this character, it is particularly desirable to roll these parts from single pieces of sheet metal, in order to provide refine-1 ments for the structure, as well as otherwise reducing the cost of manufacture, which in turn will lower the selling price.

The invention having been set forth, what is claimed is:

l. lin a window construction, a frame havlng opposed vertical guides, counterbalancthe slide.

incanta ing sashes movable-in the guides, a slide frame movable in certain of said guides and providedk with means for supporting one of the sashes, said sash being freely removable from said supporting means and a connection between another of the sashes and the slide, whereby the other sash and the slide may be moved simultaneously.

2. In a window construction, a frame having opposed vertical guides, counterbalancing sashes movable in the guides, a slide in certain of said guides having removably mounted therein one of the sashes and a connection between another of the sashes and the slide, whereby the latter sash and the slide may be moved simultaneously, the construction and arrangement of the connection being such that it is adjustable relatively to the slide, whereby said latter sash may be adjusted relatively to the slide witholugl moving the sash which is mounted in the s 1 e.

3. In a window construction, a frame having opposed guides, a slide mounted in cering means to selectively engage with certain of said projections, whereby the slide carried sash may be adjusted independently of the slide, or the slide and its sash may be adjusted to counterbalance with the sash which is mounted in guides of the frame.

4f. ln a window construction, a frame having opposed guides, a slide mounted in certain of the opposite guides, opposed sashes, one mounted in the guides, the other sash removably disposed in the slide, said slide having projections, sash cords connected to the sash in the guides of the frame and having means to selectively engage with said projections, whereby the slide carried sash may be adjusted independently of the slide, or the slide and its sash may be adjusted to counterbalance with the sash which is mounted in the guides of the frame, and means carried by the slide to cause the sash whch is disposed therein to move with the sli e.

5. lin a window construction, a frame.

port said lowermost sash to move with thev slide, an uppermost sash, sash cords connected to the last named sash, and means I for vdetachably and adjustably connecting the sash cords to the slide, whereby adjustment of the sash cords will adjust the uppermost sash independently of and relatively to ieaeea 6. l'n a window construction, a frame, having opposite guides, a slide having guides and engaging certain of the opposite guides of ythe frame, a lowermost sash movable in the guides of said slide, the lower ends of the guides of the slide having means to support said lowermost sash to move with the slide, an uppermost sash, sash cords co nected to the last named sash, and means fidi' detachably and adjustably connecting the sash cords to the slide, whereby adjustment of the sash cords will adjustV the uppermost sash independently of andrelatively to the slide, the construction and arrangement of the detachable means for the sash cords being such that ,the slide and the lowermost sash may act to counterbalance the upper- 7. In a window construction, a easement provided with opposed vertical guides, a slide engaging certain of the guides, a sash guided in the slide, meanscarried by the slide for supporting the sash Amovably with the slide, said sash being movable vertically with respect to the slide, another sash mounted in certain of the ides of the easement, and means connectedqlto the second sash and having adjustable connections with the slide. whereby the last mentioned sash and `said slide may counterbalanee the other sash.

8. ln a window construction, a easement having opposite guides, a slide having means operatively mounted on certain of said opposite ides, a sash operatively mounted upon the s ide, which is provided with means for supporting the sash with respect to the slide, said slide including means at its lower portion engageable with the bottom of the easement and with the lower rail of the sash, to preclude the weather.

9. In a window construction, a easement having opposite guides, a slide having means operatively mounted on certain of said opposite guides, a sash operatively mounted upon the slide, which is provided with means for supporting the sash with respect to the slide,

said slide including means at its lower portion engageable with the bottom of the casement and with the lower rail of the sash, to preclude the Weather, a second sash, Ameans connected to# the second sash and provided with selective connections with the slide, whereby the first mentioned sash and said slide may counterbalance the other sash.

A 10. ln a window construction, a easement provided with opposite guides, a slide provided with means operatively mounted in certain of the opposite guides, a sash operatively supported -on the slide, a second sash mounted in certain of said guides, means `mounted in other of the connected to the second sash and provided with selective operative connections with the slide, whereby the second mentioned sash may counterbalance the other sash and its slide.

11. ln a window construction, a frame having opposed vertical guides, a slide frame engaging with certain of said opposed guides, and provided with guides, counterbalancing sashes, certain thereof being ides of said frame, and certain other of sai sashes being mounted in the guides of the slide frame and freely removable therefrom, and raising and lowering means connected to the former of the sashes and adapted to connect with and dis connect from said slide frame, whereby the latter of the sashes and the slide frame may raise and lower with the former.

12. Ina window construction, a frame having opposed vertical guides, a slide frame having guides and being movable on certain of said guides, counterbalancing sashes, one of which is mounted in the guides of the slide,.the others of which are mounted for movement in others of the guides of said frame, raising and lowering means connected to one of said others of the sashes, said raising and lowering means having selective connections with the slide for varying the relationbetween the slide and its associated sash and the sash to which said raising and lowering means areA connected.

13. In a window construction, a frame having opposed vertical guides, a slide having guides and being movable on certain of said guides, eounterbalancing sashes, one of which is mounted in the'fguides of the slide, the others of which are mounted for movement in others of the guides of said frame, raising and lowering means connected to one of said others of the sashes, said raising and lowering means having selective connections with the slide for varying the relation between the slide and its associated sash and the sash to which said raising and lowering` means are connected, said raising and lowering means being disconnectible 'from the slide and including a member by which the sash to which the raising and lowering means are connected may be lowered the full height of the frame.

In witness whereof, in the presence of two witnesses, the inventors signature is hereunto axed.

Grenen w. muoia-sarna.

Witnesses:

Crus. lU. WiLLmMs, Jr., R. E. Home.

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